Triethylamine → 2-{(R)-1-[N-Toluoyl-(3-phthalimido-2-oxo-propyl)amino]-2-methyl-propyl}-3-benzyl-7-chloro-chromen-4-one

HRID 1726036Notes

Reaction equation

HRID 1726036 reaction equation
[C:1]1(=[O:39])[N:5]([CH2:6][C:7](=[O:33])[CH2:8][NH:9][C@@H:10]([C:14]2[O:15][C:16]3[C:21]([C:22](=[O:31])[C:23]=2[CH2:24][C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)=[CH:20][CH:19]=[C:18]([Cl:32])[CH:17]=3)[CH:11]([CH3:13])[CH3:12])[C:4](=[O:34])[C:3]2=[CH:35][CH:36]=[CH:37][CH:38]=[C:2]12.CCN(CC)CC.[C:47]1([CH3:56])[C:48]([C:53](Cl)=[O:54])=[CH:49][CH:50]=[CH:51][CH:52]=1>C(Cl)Cl>[C:47]1([CH3:56])[C:48]([C:53]([N:9]([CH2:8][C:7](=[O:33])[CH2:6][N:5]2[C:4](=[O:34])[C:3]3=[CH:35][CH:36]=[CH:37][CH:38]=[C:2]3[C:1]2=[O:39])[C@@H:10]([C:14]2[O:15][C:16]3[C:21]([C:22](=[O:31])[C:23]=2[CH2:24][C:25]2[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=2)=[CH:20][CH:19]=[C:18]([Cl:32])[CH:17]=3)[CH:11]([CH3:13])[CH3:12])=[O:54])=[CH:49][CH:50]=[CH:51][CH:52]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 702762-Methylbenzoyl chlorideHCID 667559422-[(R)-1-(3-Phthalimido-2-oxo-propylamino)-2-methyl-propyl)-3-benzyl-7-chloro-chromen-4-one

Product 1

HCID 667559282-{(R)-1-[N-Toluoyl-(3-phthalimido-2-oxo-propyl)amino]-2-methyl-propyl}-3-benzyl-7-chloro-chromen-4-oneYield 90%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To 2-[(R)-1-(3-phthalimido-2-oxo-propylamino)-2-methyl-propyl]-3-benzyl-7-chloro-chromen-4-one (0.88 g, 1.5 mMol) in CH2Cl2 (10 mL) was added Et3N (0.23 mL, 1.6 mMol) and toluoyl chloride (0.21 mL, 1.6 mMol). The reaction was stirred at RT for 18 h, concentrated under vacuum, taken up in EtOAc, washed with 1 N HCl, brine, dried (MgSO4) and evaporated to dryness. Purification by flash chromatography) on silica gel (5-15% EtOAc/hexane) followed by trituration with pet. ether, filtration and drying under vacuum gave the title compound (0.89 g, 90%) as a white solid: MS (ES) m/e 661.2 (M+H)+.

Workup

  1. concentrationconcentrated under vacuum
  2. washwashed with 1 N HCl, brine
  3. dry with materialdried (MgSO4)
  4. customevaporated to dryness
  5. customPurification by flash chromatography) on silica gel (5-15% EtOAc/hexane)
  6. filtrationfollowed by trituration with pet. ether, filtration
  7. customdrying under vacuum

Sources & evidence

ORD record
ord-ac08ac5f30514799ac4fee3188d82a50
Source dataset
uspto-grants-2009_02
Patent number
US07491746B2

Reaction notes

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